Attraction of male turnip mothsAgrotis segetum (Lepidoptera: Noctuidae) to sex pheromone components and their mixtures at 11 sites in Europe, Asia, and Africa

Tóth, Miklós; Löfstedt, Christer; Blair, B. W.; Cabello, Tomás; Farag, A. I.; Hansson, Bill S.; Kovalev, B. G.; Maini, S.; Nesterov, E. A.; Pajor, Istvàn; Sazonov, A.P.; Shamshev, I. V.; Subchev, Mitko; Szöcs, Gábor

doi:10.1007/bf00994360

Cited by 81 publications

(43 citation statements)

References 17 publications

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“…The turnip moth, Agrotis segetum, is widely distributed throughout Europe, the near East, and Africa. Various ratios of (Z)-5-decenyl acetate, (Z)-7-dodecenyl acetate, and (Z)-9-tetradecenyl acetate were required to attract males throughout Eurasia and North Africa, whereas in sub-Saharan Africa, (Z)-5-decenyl acetate alone attracted males (Arn et al 1983;Löfstedt et al 1986;Tóth et al 1992;Wu et al 1999). The larch budmoth, Zeiraphera diniana, consists of two host races that feed on larch and Cembran pine in the European Alps.…”

Section: Discussionmentioning

confidence: 99%

Experimental Evidence for Three Pheromone Races of the Scarab Beetle Phyllophaga anxia (LeConte)

et al. 2008

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This study offers experimental evidence for the existence of three pheromone races of the northern genitalic form of Phyllophaga anxia: one race in which females produce and males respond mainly to L-valine methyl ester, a second producing and responding to L-isoleucine methyl ester, and a third producing and responding to an intermediate range of blends of the two compounds. At Franklinville, NY, pheromone gland contents of females were analyzed using coupled gas chromatography-electroantennogram detection. Two types of females were found, one that produced greater than 99% L-valine methyl ester and another that produced greater than 99% Lisoleucine methyl ester. Capture-mark-release-recapture field tests with males at Franklinville established that most males were recaptured in traps baited with the same blends with which they were originally captured. The populations characterized at Franklinville, NY, have also been found at numerous locations from eastern Canada and the northeast and north central USA, sometimes in allopatry and sometimes in sympatry. At a site in Carver, MA, P. anxia males responded to blends of the methyl esters of L-valine and L-isoleucine, and Carver females produced blends similar to those to which the males responded. Populations responding to blends have been identified only from southeastern Massachusetts and Rhode Island. At a field site near Waterloo, NY, the addition of small proportions of L-isoleucine methyl ester to lures containing L-valine methyl ester did not affect trap captures, but higher proportions of L-isoleucine methyl ester were inhibitory, decreasing trap captures.

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Section: Discussionmentioning

confidence: 99%

Experimental Evidence for Three Pheromone Races of the Scarab Beetle Phyllophaga anxia (LeConte)

et al. 2008

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“…Geographical variation has been found both in female signals [34][35][36][37] and male responses [22,23,38]. This suggests that moth sex pheromone signals and behavioural responses are affected by local environmental factors, although this variation may also be due to environmentally independent sexual selection.…”

Section: Introductionmentioning

confidence: 99%

Within-population variability in a moth sex pheromone blend: genetic basis and behavioural consequences

et al. 2014

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Evolutionary diversification of sexual communication systems in moths is perplexing because signal and response are under stabilizing selection in many species, and this is expected to constrain evolutionary change. In the moth Heliothis virescens, we consistently found high phenotypic variability in the female sex pheromone blend within each of four geographically distant populations. Here, we assess the heritability, genetic basis and behavioural consequences of this variation. Artificial selection with field-collected moths dramatically increased the relative amount of the saturated compound 16:Ald and decreased its unsaturated counterpart Z11-16:Ald, the major sex pheromone component (high line). In a cross between the high-and low-selected lines, one quantitative trait locus (QTL) explained 11-21% of the phenotypic variance in the 16:Ald/Z11-16:Ald ratio. Because changes in activity of desaturase enzymes could affect this ratio, we measured their expression levels in pheromone glands and mapped desaturase genes onto our linkage map. A delta-11-desaturase had lower expression in females producing less Z11-16:Ald; however, this gene mapped to a different chromosome than the QTL. A model in which the QTL is a trans-acting repressor of delta-11 desaturase expression explains many features of the data. Selection favouring heterozygotes which produce more unsaturated components could maintain a polymorphism at this locus.

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“…It is possible that geographic variations in the pheromone system are present within the Philippines as previously reported with the sex pheromones of other species such as Agrotis segetum (Tóth et al, 1992), if Ramachandran et al used a population of another locality in the Philippines for their pheromone identification. This also might indicate the occurrence of pheromone-based assertive mating or random mating as has been 486 K. KAWAZU et al found with population using different pheromone blends of Ostrinia scapulalis (Takanashi et al, 2005).…”

Section: Discussionmentioning

confidence: 96%

Attraction of Cnaphalocrocis medinalis (Lepidoptera: Crambidae) males in Southeast Asia to female sex pheromone traps: Field tests in southernmost China, northern Vietnam and southern Philippines with three synthetic pheromone blends regarding geographic variations

Kawazu

Suzuki

Yoshiyasu

et al. 2005

Appl. Entomol. Zool.

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Field tests of three types of synthetic sex pheromone blend (Japanese blend: Z11-18:Ald (55 mg), Z13-18:Ald (500 mg), Z11-18:OH (120 mg) and Z13-18:OH (180 mg), Indian blend: Z11-16:Ac (50 mg) and Z13-18:Ac (500 mg) and Philippine blend: Z11-16:Ac (500 mg) and Z13-18:Ac (10 mg) based on geographic variations in sex pheromones so far reported) for the rice leaffolder moth, Cnaphalocrocis medinalis Guenée (Lepidoptera: Crambidae), were performed at Nanning, in southernmost China, Hanoi, in northern Vietnam, and on Bohol, an island in the southern Philippines. In all of these tests, only the Japanese blend attracted significant numbers of male C. medinalis, while neither the Indian nor the Philippine blend showed any attractiveness to the males. The results at Nanning and Hanoi, from which the Japanese population may originate from, support the current inference about the migration routes of C. medinalis. On the contrary, the results on Bohol, in the Philippines, were unexpected and showed the presence of a population responding to the Japanese blend, but not to the Philippine blend.

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Attraction of male turnip mothsAgrotis segetum (Lepidoptera: Noctuidae) to sex pheromone components and their mixtures at 11 sites in Europe, Asia, and Africa

Cited by 81 publications

References 17 publications

Experimental Evidence for Three Pheromone Races of the Scarab Beetle Phyllophaga anxia (LeConte)

Experimental Evidence for Three Pheromone Races of the Scarab Beetle Phyllophaga anxia (LeConte)

Within-population variability in a moth sex pheromone blend: genetic basis and behavioural consequences

Attraction of Cnaphalocrocis medinalis (Lepidoptera: Crambidae) males in Southeast Asia to female sex pheromone traps: Field tests in southernmost China, northern Vietnam and southern Philippines with three synthetic pheromone blends regarding geographic variations

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